Self similarity

It is believed that fractals, somehow, have correspondences with the structure of the human mind, which is why people find them so familiar. This familiarity is still a mystery and the more the subject is deepened, the more the mystery increases

Benoît Mandelbrot

The texture that covers these vases comes from  a roman cabbage.
The spiral shape repeating itself on different scales (self-similarity) refers to a primordial structure of spatial organization.